5 results about "Contact microphone" patented technology

An abnormal noise reproduction device and an abnormal noise reproduction method thereof are provided in the disclosure. The abnormal noise reproduction device includes at least one measuring device, an analysis device, and a vibration device. The at least one measuring device includes a contact microphone and an accelerometer. The contact microphone is disposed on the abnormal noise generating part of a vehicle, senses vibration sound of the abnormal noise generating part, and generates a vibration sound signal. An acceleration signal is generated by synchronously sensing acceleration of the contact microphone over a time sequence through the accelerometer. The analysis device determines when the abnormal noise generating part produces abnormal noise according to the vibration sound signal. The vibration device applies vibration to the vehicle and reproduces the acceleration signal corresponding to the abnormal noise.

The application discloses a kind of asthma detection method and portable asthma detection equipment, the method includes obtaining user breathing sound;Segmentation after de-noising, and into frequency spectrum by short-time Fourier transform and logarithmic transformation conversion;And frequency spectrum is input to neural network model to obtain wheezing and wheeze sound.Detection equipment includes shell, main control unit is built in shell, bottom is embedded with contact microphone connected with main control unit;Wherein, main control unit is used to control contact microphone to collect breathing sound and utilize the asthma detection method described above to identify wheezing and wheeze sound.The detection method of the application is fast in operation, good in real-time, can realize the timely detection to the asthma condition of patient, and has good distinguishing effect;While detection equipment is portable, simple to operate, easy to carry.

The utility model discloses a straw cover opening and closing device which comprises a gripper mechanism and a straw carrying and clamping mechanism. The straw carrying clamping mechanism supports the straw, the gripper mechanism can ascend and descend to abut against the straw carrying clamping mechanism, meanwhile, the straw carrying clamping mechanism clamps the straw, and the gripper mechanism can conduct cover opening and closing operation on the straw on the straw carrying clamping mechanism. The straw cover opening and closing device has the advantages that cover opening and closing are achieved through forward and reverse rotation of the driving part, the lifting driving assembly drives the gripper assembly to descend to be close to the straw, the driving part drives the clamping sleeve to clamp the straw cover, then the cover is unscrewed, the lifting driving assembly drives the gripper assembly to ascend, cover opening is completed, and otherwise, the cover is closed; the sliding guide rail reserves a floating space, is located at the bottom of the sliding guide rail under the influence of the self weight of the gripper assembly in the initial state, and floats upwards along the sliding guide rail under the pressure from the straw after the positioning clamping piece descends to make contact with the straw, so that the straw is prevented from being damaged by the pressure of the positioning clamping piece.

The invention relates to the technical field of power equipment state monitoring and fault positioning, and discloses a GIS breakdown positioning method and device based on two-dimensional sound array energy imaging, and the method comprises the steps: collecting sound wave signals generated by the breakdown of GIS equipment through a non-contact microphone array disposed around the GIS equipment; performing energy extraction on the sound wave signal to obtain observation energy; constructing a theoretical energy model in a coverage area of the non-contact microphone array according to a possible sound source position; calculating the energy matching similarity between the observation energy and the theoretical energy of the theoretical energy model; and positioning a breakdown sound source position according to the energy matching similarity and outputting a positioning result.

A method to combine contact and acoustic microphones in a headset for voice wake and voice processing in immersive reality applications is provided. The method includes receiving, from a contact microphone, a first acoustic signal, determining a fidelity and a quality of the first acoustic signal, receiving, from an acoustic microphone, a second acoustic signal, and when the fidelity and quality of the first acoustic signal exceeds a pre-selected threshold, combining the first acoustic signal and the second acoustic signal to provide an enhanced acoustic signal to a smart glass user. A non-transitory, computer-readable medium storing instructions to cause a headset to perform the above method, and the headset, are also provided.